Road machine



L. DE CAMP.

ROAD MACHINE.

APPLICATION FILED JAN. I9, 1920.

1,402,148, Patented Jan. 3, 1922,,

2 SHEETS-SHEET 1.

//1 men for 9 LeeDe 00mg L. DE BAMP.

ROAD MACHINE.

APPLICATION FILED JAN. 19, 1920.

airs STAT-ES "*AREQ' nan pEcA P; 0F oxnnniorra, o LAHoMA.

ROAD MACHINE.

lahoma and State of Oklahoma, have invented certain new and usefulImprovements in Road Machines; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to makea-nd usethe same.

This invention relates to raroad surfacing machine, and for its primaryobject and pur- -bers 1.- r

A main :shaft 8 is disposedtransverselypose it'is designed to readily,.efiiciently and economically smooth and resurface roads of varioustypes, acting to grind off projections and humps in the road and deliverroad material gathered by such operation. eithento small depressions andhollows in the road orto oneside of the road. A further objectof theinvention is to so construct the machine,;particularly the rotatingoperating drum thereof, that the projecting ribs extending radially fromthe drum may be readily replaced-when'worn out by others, and at thesame time by merely reversing the position of the drum with respect tothe remainder of the machine, whenever such ribs become dulled on oneside, it is possible to operate the machine until the-ribs are entirelyworn out without removing the same for grinding or otherwise refittingthem,

said ribs when reversed'in position being in shape from the wear'imparted by operation of the machine to the opposite sides to continueoperation without further refitting.

Various other objects and purposes other than those specifically statedabove will appear as understanding is had of the invention from thefollowing description takenin connection with the accompanying drawingsillustrating the invention, in which drawings, 1 Fig. 1 1s a plan v1ewof the road surfacing machine.

Fig. '2 is a side elevation thereof.

Fig. 3 is a sile elevation of one of tions used in making up one of theprojecting ribs on the rotating drum,,and

Fig. 4 is an end view thereof.

Like reference characters refer to like parts in the several views ofthe drawing.

In construction, astrong and rigid frame is made comprisingsubstantially two conthe sec- Specification of Letters Patent. IatenfiedJa 1922. Application filed January 19, 1920. Serial to. 352,397. I

nected but spaced apart trusses, each hav ing a lower member 1, verticalposts2, top

,member 3 and diagonal end members 4 as shown in Fig. 1. The lowermembers ofthe trusses are connected by cross ties'5 and the,

upper members by ties 6. i The members of the truss and the ties areformed from well known commercial forms of iron such as channels andangle irons and a very strong and rigid frame may be .made therefrom.

At the front end additional members 7 and 7, members 7 being vangularlypositioned, are used being connected to the-lower memof and below theframe having suitable bearings at its ends connected to the framemembers 1. On said shaft two large wheels v9 are secured the sameservingto carry the r entire machine and rotating shaft 8 whenthe machine is,moved. locatedahead of the centre of gravity. of the machine wherebythere is a tendency for the rearpo-rtion of the frame to drop. A post 10pivotally; depends from the under rear part of the frame and, is ofservice to hold the same, in upper position, swinging to the rearhowever when the machine is moved and freely passing over obstructionsas indicated in dotted linesv in Fig. 2. The members"?' and 7 of theframe serve .as a forward projecting portion which at its centre'maybeshaped to have attachment to any suitable motor .orother power,preferably, a tractor for 'moving the machine along the road.

The main Shea is a gear 12, each meshing with a gear 13 mounted .on astud shaft 14 back of the main shaft. Alongside each gear 13 a sprocketwheel 15 is'also mounted rotating with its associated gear 13. A bar 16is loosely vmounted at its upper end on each ofthe shaftsltextending'downwardly and to the rear-and being formed with a bearingat its lower end to receive. a'stud 17 projecting from a head '18fixed'in the end of afhollow cast metal'drum 19, whereby said drum'isrotatably carried between the bars 16. A sprocket wheel 20 is secured ateach end of the drum and a sprocket chain 21 is passed around wheel 15and 20 at each side of the machine, it being evident that the drum isdriven when the machine is moved over the road; and thespeed of drivingmay be regulated by the'sizes of the sprocket wheels which may bechanged so as to give different; speeds desirable for differentcharacters of' roads.

A cable 22 is used at each end of the drumfor raising and lowering thesame, said cable passing through pulley blocks 23 one of which issuspended from a hook 24;atta'ched to a bracket which in turn is fixedto an upper portion of the frame, while'the other is attached to a hook25 secured adjacent the lower end of bar 16 The construction on eachside of the machine is the same in this connection andthrough it thedrum is raised or lowered as desired.

In the length of the drum and on its outer surface dove-tailed groovesare formed spirally in whichsections 26 havinfgbases 27 to fit thegrooves. are located, a plurality of sections in alinement making aspirally positioned rib on the drum. A plurality of said ribs are thusmade in spaced apart relation' around the entire surface of the drum andwhen the drum is driven in lower position, and adjacent the surface ofthe road,

the ribs'serve' to cut and grind off any humps or projections levelingthe same while the spiral character of the ribs causes the materialremoved by the ribs to work to one side, filling up any depressionsanddelivering any excess at the sid'e'of the road. Moreover, the wear onthe ribs follows lines substantially parallel to the dotted line 28,Fig. 4:, and after the ribs on one side have become considerably worn,it is only necessary to reverse the drum, changing it end for endwhereupon the opposite sides of the ribs are sharp and in good conditionfor service.

Accordingly, it is never necessary to re move the ribs for sharpening,but when a rib or ribs have become entirely worn out,

the same may be readily removed and new ribs used in replacement.

From the foregoing it will be appa that I have made a strong and durableroad adam andpeven brick pavements may be? ground to smooth condition byuse of this machine and a large amountofroad repair may be accomplishedat a" minimum cost;

. changed without departing from the inven surfacing machine which maybe used on many types of roads. Dirt, gravel, 1nac Various. details ofcoi struction may be tion, and I donot wish to be limited to thespecific disclosure made but consider my- 33811 entitledtoallmodificationsinconstruc-fj formed of a plurality -of' contiguousshort sections located in alinement, substantially asdescribed.

2. A drum foi load surfacing machines comprising a hollo'wcylinder ofcast metal formed with a plurality of" dove-tailed grooves positionedspirally" and lengthwise of the drum from one end of the same to theother, said grooves being spaced from each other around the drunnand arib'removably located in j each groove and extending the entire lengthof the same and projecting outwardly from the drum, each rib beingformed with abase to. slidably enter a groove at an end thereof to fitthe dove-tailed form of the groove and; be thereby held on the drum." Ij r A, drum for road; surfacing machines comprising a hollow cylinderofcast metal" formed with a plurality of dove-tailed grooves positionedspirallyjand lengthwise of the drum from one end of the same to theother, said grooves being spaced from each other around the drum, a ribremovably I located in each groove and projectingoutwardlyfrom the'drum,each rib being formed of a series of short contlguous sectlons locatedin alinemfent 1n a groove, each sectlon having a base to slidablv entera groove at i the "end thereof, andv a head closing each end of thedrum, substantially as described. 4. A road surfacing machine includinga frame, supporting wheels located under and substantially at the middleof the frame, a "rotatably mounted "drum back of the'wheels and.tra11sversely' of the frame, means to raiseandl lower the drum withreference to the frame, means t ojdrive the drum from the wheels, andmeanson the drum for grind- 1mg projectionsandsmoothing and level ngaroad over which the drum is moved, the last mentioned means beingadapted tomove the material laterally of the machine, substantially asdescribed. p In .testimony'whercof I afiix my signature.

